Added laid out tree drawing function, and implemented p66.

Author Pascal J. Bourguignon <pjb@informatimago.com>
Author date 2011-01-10 09:12:19
Author local date 2011-01-10 10:12:19 +0100
Committer Pascal J. Bourguignon <pjb@informatimago.com>
Committer date 2011-01-10 09:12:19
Committer local date 2011-01-10 10:12:19 +0100
Commit ebfa174746a9f46eceb3df42a8c5057cea51d6e7
Tree 37bacf66e8eabcf5c6409f3fbb78eb0d179a148e
Parent a4b20cc828b36b4535c4defda651bed5e825d30e
Added laid out tree drawing function, and implemented p66.
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